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Thule Op Site Weather Records (GLW00017605)

Record envelope, standing records and threshold days for Thule Op Site (GLW00017605), Greenland [Denmark], with 76 years of record.

Key Facts for Thule Op Site

  • Thule Op Site (GLW00017605) is a weather station in Greenland [Denmark] at 76.52 latitude and -68.83 longitude, 77 m (253 ft) above sea level.
  • The station reports from 1951 to 2026, 76 years of record.
  • 1,464 records set at Thule Op Site still stand.
  • Records are tracked for tmax, tmin, prcp, snwd: an element needs 30 years of data to be eligible.
  • Thule Op Site set a daily record snow depth of 22.9 cm (9.0 in) on 10 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Greenland [Denmark], 76.52 latitude, -68.83 longitude.
  • Elevation: 77 m (253 ft).
  • Period of record: 1951 to 2026, 76 years.
  • Eligible elements: tmax, tmin, prcp, snwd.

Daily Record Envelope and 2026

8 days at or beyond a record
Daily record high and record low at Thule Op Site, with 2026 drawn through them The band shows the record high and record low for each calendar day at Thule Op Site. The lines show the 2026 daily maximum and minimum. 8 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -60-40-20020 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Thule Op Site. The lines show the 2026 daily maximum and minimum. 8 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Thule Op Site, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan3.5 C (38.3 F)-41.8 C (-43.2 F)3.5 C (38.3 F)-24.6 C (-12.3 F)
Feb6.1 C (43.0 F)-41.1 C (-42.0 F)-11.2 C (11.8 F)-34.6 C (-30.3 F)
Mar6.2 C (43.2 F)-42.2 C (-44.0 F)-6.8 C (19.8 F)-32.9 C (-27.2 F)
Apr9.7 C (49.5 F)-37.8 C (-36.0 F)-4.7 C (23.5 F)-25.8 C (-14.4 F)
May13.4 C (56.1 F)-28.3 C (-18.9 F)5.7 C (42.3 F)-19.4 C (-2.9 F)
Jun17.8 C (64.0 F)-16.1 C (3.0 F)10.3 C (50.5 F)-3.5 C (25.7 F)
Jul19.2 C (66.6 F)-3.3 C (26.1 F)16.8 C (62.2 F)0.1 C (32.2 F)
Aug17.2 C (63.0 F)-5.1 C (22.8 F)14.5 C (58.1 F)0.4 C (32.7 F)
Sep15.3 C (59.5 F)-26.1 C (-15.0 F)7.4 C (45.3 F)-13.1 C (8.4 F)
Oct7.4 C (45.3 F)-31.1 C (-24.0 F)-2.0 C (28.4 F)-20.3 C (-4.5 F)
Nov5.9 C (42.6 F)-35.6 C (-32.1 F)n/an/a
Dec6.0 C (42.8 F)-39.4 C (-38.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Thule Op Site by the year they were set 1,464 records at Thule Op Site still stand. 1974 holds the most, with 176. 0501001502001952: 351953: 231954: 181955: 371956: 111957: 391958: 251959: 141960: 181961: 401962: 341963: 281964: 701965: 341966: 221967: 441968: 191969: 141970: 371971: 271972: 201973: 791974: 1761975: 941998: 21999: 12000: 132001: 142002: 162003: 112004: 152005: 102006: 202007: 52008: 152009: 152010: 262011: 122012: 202013: 142014: 102015: 202016: 152017: 102018: 82019: 542020: 262021: 342022: 192023: 222024: 302025: 232026: 26195219581964197019982004201020162022
1,464 records at Thule Op Site still stand. 1974 holds the most, with 176.
Standing records at Thule Op Site by the year they were set
Year setStanding records
195235
195323
195418
195537
195611
195739
195825
195914
196018
196140
196234
196328
196470
196534
196622
196744
196819
196914
197037
197127
197220
197379
1974176
197594
19982
19991
200013
200114
200216
200311
200415
200510
200620
20075
200815
200915
201026
201112
201220
201314
201410
201520
201615
201710
20188
201954
202026
202134
202219
202322
202430
202523
202626

All-Time Record Progression

4 new records
When Thule Op Site set new all-time records 4 all-time records were set at Thule Op Site between 8 July 2015 and 20 July 2024. Each dot is a new record. Record high maximum temperatureRecord daily precipitationRecord high minimum temperature8 July 2015: Record high maximum temperature 18.8 C (65.8 F)11 July 2015: Record high maximum temperature 19.2 C (66.6 F)14 August 2017: Record daily precipitation 52.1 mm (2.1 in)20 July 2024: Record high minimum temperature 11.5 C (52.7 F)201520202025
4 all-time records were set at Thule Op Site between 8 July 2015 and 20 July 2024. Each dot is a new record.
When Thule Op Site set new all-time records
DateKindDetail
2015-07-08Record high maximum temperatureRecord high maximum temperature 18.8 C (65.8 F)
2015-07-11Record high maximum temperatureRecord high maximum temperature 19.2 C (66.6 F)
2017-08-14Record daily precipitationRecord daily precipitation 52.1 mm (2.1 in)
2024-07-20Record high minimum temperatureRecord high minimum temperature 11.5 C (52.7 F)

Wettest Day of Each Month

Aug: 52.1 mm (2.1 in)
Record daily precipitation for each month at Thule Op Site The wettest day on record for each calendar month at Thule Op Site. The most was 52.1 mm (2.1 in) on 14 August 2017. 0204060 Jan: 31.0 mm (1.2 in), 2 January 2009 Jan Feb: 12.4 mm (0.5 in), 6 February 1958 Feb Mar: 12.4 mm (0.5 in), 22 March 2011 Mar Apr: 24.9 mm (1.0 in), 18 April 1997 Apr May: 27.7 mm (1.1 in), 4 May 2010 May Jun: 27.9 mm (1.1 in), 16 June 1959 Jun Jul: 49.5 mm (1.9 in), 26 July 1957 Jul Aug: 52.1 mm (2.1 in), 14 August 2017 Aug Sep: 32.3 mm (1.3 in), 18 September 1957 Sep Oct: 25.1 mm (1.0 in), 1 October 2021 Oct Nov: 25.9 mm (1.0 in), 1 November 2016 Nov Dec: 46.2 mm (1.8 in), 31 December 2009 Dec
The wettest day on record for each calendar month at Thule Op Site. The most was 52.1 mm (2.1 in) on 14 August 2017.
Record daily precipitation for each month at Thule Op Site
MonthRecord daily precipitation (mm)Date
Jan31.0 mm (1.2 in)2 January 2009
Feb12.4 mm (0.5 in)6 February 1958
Mar12.4 mm (0.5 in)22 March 2011
Apr24.9 mm (1.0 in)18 April 1997
May27.7 mm (1.1 in)4 May 2010
Jun27.9 mm (1.1 in)16 June 1959
Jul49.5 mm (1.9 in)26 July 1957
Aug52.1 mm (2.1 in)14 August 2017
Sep32.3 mm (1.3 in)18 September 1957
Oct25.1 mm (1.0 in)1 October 2021
Nov25.9 mm (1.0 in)1 November 2016
Dec46.2 mm (1.8 in)31 December 2009

Period of Record Coverage

1951 to 2026
Days with data per year at Thule Op Site 55 years of record at Thule Op Site, 1951 to 2026. 26 years have data for under 90 percent of days and are left out of rankings: 1951, 1973, 1974, 1975, 1997, 1998, 1999, 2000 and others. 1951: 65 of 365 days1952: 365 of 366 days1953: 361 of 365 days1954: 358 of 365 days1955: 365 of 365 days1956: 365 of 366 days1957: 362 of 365 days1958: 361 of 365 days1959: 365 of 365 days1960: 363 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 363 of 366 days1965: 361 of 365 days1966: 363 of 365 days1967: 363 of 365 days1968: 363 of 366 days1969: 359 of 365 days1970: 362 of 365 days1971: 359 of 365 days1972: 357 of 366 days1973: 285 of 365 days1974: 267 of 365 days1975: 171 of 365 days1997: 3 of 365 days1998: 9 of 365 days1999: 53 of 365 days2000: 132 of 366 days2001: 182 of 365 days2002: 197 of 365 days2003: 152 of 365 days2004: 178 of 366 days2005: 265 of 365 days2006: 288 of 365 days2007: 249 of 365 days2008: 249 of 366 days2009: 262 of 365 days2010: 250 of 365 days2011: 244 of 365 days2012: 151 of 366 days2013: 308 of 365 days2014: 336 of 365 days2015: 310 of 365 days2016: 342 of 366 days2017: 333 of 365 days2018: 311 of 365 days2019: 330 of 365 days2020: 347 of 366 days2021: 326 of 365 days2022: 333 of 365 days2023: 329 of 365 days2024: 328 of 366 days2025: 356 of 365 days2026: 268 of 365 days19601970200020102020
55 years of record at Thule Op Site, 1951 to 2026. 26 years have data for under 90 percent of days and are left out of rankings: 1951, 1973, 1974, 1975, 1997, 1998, 1999, 2000 and others.
Days with data per year at Thule Op Site
YearDays with dataShare of yearComplete
19516518%No
1952365100%Yes
195336199%Yes
195435898%Yes
1955365100%Yes
1956365100%Yes
195736299%Yes
195836199%Yes
1959365100%Yes
196036399%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
196436399%Yes
196536199%Yes
196636399%Yes
196736399%Yes
196836399%Yes
196935998%Yes
197036299%Yes
197135998%Yes
197235798%Yes
197328578%No
197426773%No
197517147%No
199731%No
199892%No
19995315%No
200013236%No
200118250%No
200219754%No
200315242%No
200417849%No
200526573%No
200628879%No
200724968%No
200824968%No
200926272%No
201025068%No
201124467%No
201215141%No
201330884%No
201433692%Yes
201531085%No
201634293%Yes
201733391%Yes
201831185%No
201933090%Yes
202034795%Yes
202132689%No
202233391%Yes
202332990%Yes
202432890%No
202535698%Yes
202626873%No

Latest Records

20
Latest records at Thule Op Site
DateStationRecordValueBeat old record byOld record stoodSignificance
10 October 2026Thule Op Site, GLdaily snow depth (Provisional)22.9 cm (9.0 in)5.1 cm (2.0 in)52 years30 of 100 (Routine)
9 October 2026Thule Op Site, GLdaily snow depth (Tie, Provisional)20.3 cm (8.0 in)tie57 years6 of 100 (Routine)
5 October 2026Thule Op Site, GLall-time snow depth (Provisional)152.4 cm (60.0 in)35.3 cm (13.9 in)30 years76 of 100 (Major)
13 September 2026Thule Op Site, GLdaily high min (Provisional)1.0 C (33.8 F)0.4 C (0.7 F)71 years28 of 100 (Routine)
8 September 2026Thule Op Site, GLdaily high min (Tie, Provisional)1.9 C (35.4 F)tie24 years3 of 100 (Routine)
6 September 2026Thule Op Site, GLdaily rain (Provisional)9.0 mm (0.35 in)0.6 mm (0.02 in)65 years20 of 100 (Routine)
5 September 2026Thule Op Site, GLdaily rain (Provisional)8.9 mm (0.35 in)5.6 mm (0.22 in)73 years20 of 100 (Routine)
4 September 2026Thule Op Site, GLdaily rain (Provisional)7.6 mm (0.30 in)4.6 mm (0.18 in)37 years20 of 100 (Routine)
3 September 2026Thule Op Site, GLdaily high min (Provisional)3.5 C (38.3 F)0.2 C (0.4 F)17 years12 of 100 (Routine)
12 August 2026Thule Op Site, GLdaily high min8.2 C (46.8 F)1.4 C (2.5 F)15 years16 of 100 (Routine)
12 August 2026Thule Op Site, GLdaily high max12.7 C (54.9 F)0.4 C (0.7 F)11 years11 of 100 (Routine)
11 August 2026Thule Op Site, GLdaily high max14.5 C (58.1 F)2.4 C (4.3 F)1 year14 of 100 (Routine)
10 August 2026Thule Op Site, GLdaily high min6.4 C (43.5 F)0.3 C (0.5 F)73 years30 of 100 (Routine)
8 August 2026Thule Op Site, GLdaily high min8.4 C (47.1 F)0.5 C (0.9 F)15 years13 of 100 (Routine)
7 August 2026Thule Op Site, GLdaily high min8.9 C (48.0 F)2.1 C (3.8 F)7 years17 of 100 (Routine)
6 August 2026Thule Op Site, GLdaily high min8.8 C (47.8 F)1.0 C (1.8 F)68 years31 of 100 (Routine)
1 August 2026Thule Op Site, GLmonthly high min10.1 C (50.2 F)0.7 C (1.3 F)65 years38 of 100 (Notable)
31 July 2026Thule Op Site, GLdaily high min10.6 C (51.1 F)1.2 C (2.2 F)20 years17 of 100 (Routine)
30 July 2026Thule Op Site, GLdaily high min10.3 C (50.5 F)0.9 C (1.6 F)64 years29 of 100 (Routine)
28 July 2026Thule Op Site, GLdaily high min10.3 C (50.5 F)1.8 C (3.2 F)16 years18 of 100 (Routine)

Climate Trend

29 complete years, 1952 to 2025
Annual mean temperature at Thule Op Site as warming stripes, 1952 to 2025 One stripe for each of 29 complete years at Thule Op Site, 1952 to 2025. Blue stripes are years cooler than the station's own mean of -11.0 C (12.2 F); red stripes are warmer. The coolest year was 1961, at -13.9 C (6.9 F), and the warmest was 2025, at -8.1 C (17.4 F). The strongest colour marks a difference of 3.0 C (5.4 F). 1952: -10.9 C, +0.1 C from the station mean1953: -12.1 C, -1.1 C from the station mean1954: -11.1 C, -0.1 C from the station mean1955: -11.6 C, -0.6 C from the station mean1956: -11.6 C, -0.5 C from the station mean1957: -10.2 C, +0.8 C from the station mean1958: -11.7 C, -0.7 C from the station mean1959: -11.6 C, -0.5 C from the station mean1960: -11.2 C, -0.2 C from the station mean1961: -13.9 C, -2.9 C from the station mean1962: -10.5 C, +0.5 C from the station mean1963: -10.2 C, +0.8 C from the station mean1964: -12.9 C, -1.8 C from the station mean1965: -10.5 C, +0.5 C from the station mean1966: -12.2 C, -1.2 C from the station mean1967: -11.5 C, -0.5 C from the station mean1968: -12.1 C, -1.1 C from the station mean1969: -10.9 C, +0.1 C from the station mean1970: -12.0 C, -1.0 C from the station mean1971: -12.8 C, -1.8 C from the station mean1972: -13.0 C, -1.9 C from the station mean2014: -9.6 C, +1.4 C from the station mean2016: -9.4 C, +1.6 C from the station mean2017: -10.3 C, +0.7 C from the station mean2019: -8.4 C, +2.6 C from the station mean2020: -10.5 C, +0.5 C from the station mean2022: -9.5 C, +1.6 C from the station mean2024: -9.1 C, +1.9 C from the station mean2025: -8.1 C, +2.9 C from the station mean19521960197019801990200020102020
One stripe for each of 29 complete years at Thule Op Site, 1952 to 2025. Blue stripes are years cooler than the station's own mean of -11.0 C (12.2 F); red stripes are warmer. The coolest year was 1961, at -13.9 C (6.9 F), and the warmest was 2025, at -8.1 C (17.4 F). The strongest colour marks a difference of 3.0 C (5.4 F).
Annual mean temperature at Thule Op Site as warming stripes, 1952 to 2025
YearAnnual mean temperatureDifference from the station mean
1952-10.9 C+0.07 C
1953-12.1 C-1.13 C
1954-11.1 C-0.11 C
1955-11.6 C-0.57 C
1956-11.6 C-0.55 C
1957-10.2 C+0.80 C
1958-11.7 C-0.72 C
1959-11.6 C-0.55 C
1960-11.2 C-0.21 C
1961-13.9 C-2.92 C
1962-10.5 C+0.47 C
1963-10.2 C+0.83 C
1964-12.9 C-1.85 C
1965-10.5 C+0.47 C
1966-12.2 C-1.16 C
1967-11.5 C-0.50 C
1968-12.1 C-1.10 C
1969-10.9 C+0.07 C
1970-12.0 C-0.96 C
1971-12.8 C-1.81 C
1972-13.0 C-1.94 C
2014-9.6 C+1.42 C
2016-9.4 C+1.64 C
2017-10.3 C+0.74 C
2019-8.4 C+2.64 C
2020-10.5 C+0.51 C
2022-9.5 C+1.55 C
2024-9.1 C+1.87 C
2025-8.1 C+2.90 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1951 to 2026
Yearly extremes at Thule Op Site: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)19.2 C (66.6 F)201513.9 C (57.0 F)55
Coldest night (TNn)-42.2 C (-44.0 F)1961-37.2 C (-35.0 F)55
Wettest day (Rx1day)52.1 mm (2.1 in)201713.0 mm (0.5 in)70
Wettest five days (Rx5day)67.2 mm (2.6 in)195717.5 mm (0.7 in)67
Longest dry spell (CDD)129 days195712 days70

Hottest day (TXx)

Hottest day (TXx) at Thule Op Site by year The hottest day of the year at Thule Op Site, 1951 to 2026. The record is 19.2 C (66.6 F) in 2015, marked on the chart; the median year is 13.9 C (57.0 F). -20-10010201960198020002020Record: 19.2 C (66.6 F) in 2015
The hottest day of the year at Thule Op Site, 1951 to 2026. The record is 19.2 C (66.6 F) in 2015, marked on the chart; the median year is 13.9 C (57.0 F).
Hottest day (TXx) at Thule Op Site by year
YearHottest day (TXx)
19510.6 C (33.1 F)
195216.7 C (62.1 F)
195313.9 C (57.0 F)
195414.4 C (57.9 F)
195512.8 C (55.0 F)
195616.1 C (61.0 F)
195716.7 C (62.1 F)
195812.8 C (55.0 F)
195917.2 C (63.0 F)
196013.9 C (57.0 F)
196113.9 C (57.0 F)
196213.3 C (55.9 F)
196313.9 C (57.0 F)
196410.0 C (50.0 F)
196513.3 C (55.9 F)
196613.3 C (55.9 F)
196712.8 C (55.0 F)
196812.8 C (55.0 F)
196916.7 C (62.1 F)
197011.7 C (53.1 F)
197114.4 C (57.9 F)
197211.7 C (53.1 F)
19737.8 C (46.0 F)
1974-12.8 C (9.0 F)
1975-10.0 C (14.0 F)
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997-0.4 C (31.3 F)
19987.1 C (44.8 F)
199913.3 C (55.9 F)
200014.0 C (57.2 F)
200115.6 C (60.1 F)
200214.3 C (57.7 F)
200313.5 C (56.3 F)
200413.4 C (56.1 F)
200515.8 C (60.4 F)
200614.1 C (57.4 F)
200714.4 C (57.9 F)
200816.8 C (62.2 F)
200916.8 C (62.2 F)
201013.7 C (56.7 F)
201117.0 C (62.6 F)
201213.3 C (55.9 F)
201312.1 C (53.8 F)
201412.6 C (54.7 F)
201519.2 C (66.6 F)
201615.9 C (60.6 F)
201713.5 C (56.3 F)
201814.2 C (57.6 F)
201917.8 C (64.0 F)
202015.5 C (59.9 F)
202115.4 C (59.7 F)
202215.7 C (60.3 F)
202313.2 C (55.8 F)
202414.6 C (58.3 F)
202513.6 C (56.5 F)
202616.8 C (62.2 F)

Coldest night (TNn)

Coldest night (TNn) at Thule Op Site by year The coldest night of the year at Thule Op Site, 1951 to 2026. The record is -42.2 C (-44.0 F) in 1961, marked on the chart; the median year is -37.2 C (-35.0 F). -45-40-35-30-251960198020002020Record: -42.2 C (-44.0 F) in 1961
The coldest night of the year at Thule Op Site, 1951 to 2026. The record is -42.2 C (-44.0 F) in 1961, marked on the chart; the median year is -37.2 C (-35.0 F).
Coldest night (TNn) at Thule Op Site by year
YearColdest night (TNn)
1951-34.4 C (-29.9 F)
1952-41.7 C (-43.1 F)
1953-37.8 C (-36.0 F)
1954-37.8 C (-36.0 F)
1955-41.1 C (-42.0 F)
1956-39.4 C (-38.9 F)
1957-38.3 C (-36.9 F)
1958-37.2 C (-35.0 F)
1959-37.8 C (-36.0 F)
1960-41.7 C (-43.1 F)
1961-42.2 C (-44.0 F)
1962-37.2 C (-35.0 F)
1963-36.7 C (-34.1 F)
1964-41.1 C (-42.0 F)
1965-36.7 C (-34.1 F)
1966-37.8 C (-36.0 F)
1967-37.8 C (-36.0 F)
1968-38.9 C (-38.0 F)
1969-41.7 C (-43.1 F)
1970-37.2 C (-35.0 F)
1971-39.4 C (-38.9 F)
1972-40.0 C (-40.0 F)
1973-40.0 C (-40.0 F)
1974-39.4 C (-38.9 F)
1975-39.4 C (-38.9 F)
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997-28.5 C (-19.3 F)
1998-27.1 C (-16.8 F)
1999-33.2 C (-27.8 F)
2000-36.2 C (-33.2 F)
2001-40.2 C (-40.4 F)
2002-41.2 C (-42.2 F)
2003-33.5 C (-28.3 F)
2004-37.8 C (-36.0 F)
2005-33.2 C (-27.8 F)
2006-36.3 C (-33.3 F)
2007-34.2 C (-29.6 F)
2008-37.0 C (-34.6 F)
2009-36.0 C (-32.8 F)
2010-38.0 C (-36.4 F)
2011-35.0 C (-31.0 F)
2012-40.1 C (-40.2 F)
2013-34.2 C (-29.6 F)
2014-33.6 C (-28.5 F)
2015-37.2 C (-35.0 F)
2016-34.7 C (-30.5 F)
2017-38.5 C (-37.3 F)
2018-35.9 C (-32.6 F)
2019-35.9 C (-32.6 F)
2020-41.8 C (-43.2 F)
2021-36.8 C (-34.2 F)
2022-35.1 C (-31.2 F)
2023-37.8 C (-36.0 F)
2024-35.0 C (-31.0 F)
2025-33.7 C (-28.7 F)
2026-34.6 C (-30.3 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Thule Op Site by year The wettest day of the year at Thule Op Site, 1951 to 2026. The record is 52.1 mm (2.1 in) in 2017, marked on the chart; the median year is 13.0 mm (0.5 in). 02040601960198020002020Record: 52.1 mm (2.1 in) in 2017
The wettest day of the year at Thule Op Site, 1951 to 2026. The record is 52.1 mm (2.1 in) in 2017, marked on the chart; the median year is 13.0 mm (0.5 in).
Wettest day (Rx1day) at Thule Op Site by year
YearWettest day (Rx1day)
19512.8 mm (0.11 in)
195211.4 mm (0.4 in)
195312.7 mm (0.5 in)
19547.6 mm (0.30 in)
195524.9 mm (1.0 in)
195620.3 mm (0.8 in)
195749.5 mm (1.9 in)
195812.7 mm (0.5 in)
195927.9 mm (1.1 in)
19608.4 mm (0.33 in)
19616.9 mm (0.27 in)
19629.4 mm (0.37 in)
196312.4 mm (0.5 in)
196410.2 mm (0.4 in)
19659.1 mm (0.36 in)
19666.6 mm (0.26 in)
196710.4 mm (0.4 in)
196816.0 mm (0.6 in)
196915.5 mm (0.6 in)
197016.5 mm (0.6 in)
197117.8 mm (0.7 in)
19727.6 mm (0.30 in)
197314.2 mm (0.6 in)
19743.8 mm (0.15 in)
19754.3 mm (0.17 in)
19829.9 mm (0.39 in)
19839.9 mm (0.39 in)
19843.0 mm (0.12 in)
19858.9 mm (0.35 in)
198616.0 mm (0.6 in)
198714.0 mm (0.6 in)
198818.3 mm (0.7 in)
198915.2 mm (0.6 in)
19905.1 mm (0.20 in)
19916.1 mm (0.24 in)
199213.0 mm (0.5 in)
19936.1 mm (0.24 in)
19949.9 mm (0.39 in)
19957.9 mm (0.31 in)
199618.0 mm (0.7 in)
199731.0 mm (1.2 in)
199813.0 mm (0.5 in)
19999.1 mm (0.36 in)
200035.8 mm (1.4 in)
200139.1 mm (1.5 in)
200210.9 mm (0.4 in)
200316.0 mm (0.6 in)
200410.9 mm (0.4 in)
20057.1 mm (0.28 in)
200626.9 mm (1.1 in)
200732.0 mm (1.3 in)
200831.8 mm (1.3 in)
200946.2 mm (1.8 in)
201027.7 mm (1.1 in)
201113.7 mm (0.5 in)
201239.4 mm (1.6 in)
201329.0 mm (1.1 in)
201413.2 mm (0.5 in)
201513.0 mm (0.5 in)
201625.9 mm (1.0 in)
201752.1 mm (2.1 in)
201818.3 mm (0.7 in)
201922.4 mm (0.9 in)
202012.2 mm (0.5 in)
202125.1 mm (1.0 in)
20228.9 mm (0.35 in)
202321.8 mm (0.9 in)
20240.0 mm (0.00 in)
20252.5 mm (0.10 in)
202615.3 mm (0.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Thule Op Site by year The wettest five days of the year at Thule Op Site, 1951 to 2026. The record is 67.2 mm (2.6 in) in 1957, marked on the chart; the median year is 17.5 mm (0.7 in). 0204060801960198020002020Record: 67.2 mm (2.6 in) in 1957
The wettest five days of the year at Thule Op Site, 1951 to 2026. The record is 67.2 mm (2.6 in) in 1957, marked on the chart; the median year is 17.5 mm (0.7 in).
Wettest five days (Rx5day) at Thule Op Site by year
YearWettest five days (Rx5day)
19514.7 mm (0.19 in)
195213.2 mm (0.5 in)
195318.5 mm (0.7 in)
19547.6 mm (0.30 in)
195524.9 mm (1.0 in)
195626.1 mm (1.0 in)
195767.2 mm (2.6 in)
195831.7 mm (1.2 in)
195928.4 mm (1.1 in)
196015.0 mm (0.6 in)
19619.9 mm (0.39 in)
196213.8 mm (0.5 in)
196321.1 mm (0.8 in)
196415.2 mm (0.6 in)
196518.8 mm (0.7 in)
196616.0 mm (0.6 in)
196728.6 mm (1.1 in)
196819.6 mm (0.8 in)
196921.4 mm (0.8 in)
197039.8 mm (1.6 in)
197128.5 mm (1.1 in)
197217.0 mm (0.7 in)
197325.7 mm (1.0 in)
19748.7 mm (0.34 in)
19754.3 mm (0.17 in)
198217.7 mm (0.7 in)
198320.1 mm (0.8 in)
19843.5 mm (0.14 in)
19856.3 mm (0.25 in)
198626.1 mm (1.0 in)
19877.4 mm (0.29 in)
19882.9 mm (0.11 in)
198915.2 mm (0.6 in)
19904.8 mm (0.19 in)
19918.1 mm (0.32 in)
199217.5 mm (0.7 in)
19938.4 mm (0.33 in)
199412.4 mm (0.5 in)
199514.2 mm (0.6 in)
199634.0 mm (1.3 in)
199733.3 mm (1.3 in)
199815.0 mm (0.6 in)
199915.5 mm (0.6 in)
20007.4 mm (0.29 in)
200124.9 mm (1.0 in)
20029.2 mm (0.36 in)
200324.7 mm (1.0 in)
200433.8 mm (1.3 in)
200510.5 mm (0.4 in)
200652.8 mm (2.1 in)
200719.8 mm (0.8 in)
200839.5 mm (1.6 in)
20094.7 mm (0.19 in)
201014.9 mm (0.6 in)
20117.7 mm (0.30 in)
201257.4 mm (2.3 in)
201312.7 mm (0.5 in)
201418.8 mm (0.7 in)
20152.3 mm (0.09 in)
201656.1 mm (2.2 in)
201712.3 mm (0.5 in)
2018n/a
201923.2 mm (0.9 in)
202020.1 mm (0.8 in)
202126.8 mm (1.1 in)
20225.8 mm (0.23 in)
202325.9 mm (1.0 in)
2024n/a
2025n/a
202627.6 mm (1.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Thule Op Site by year The longest dry spell of the year at Thule Op Site, 1951 to 2026. The record is 129 days in 1957, marked on the chart; the median year is 12 days. 0501001501960198020002020Record: 129 days in 1957
The longest dry spell of the year at Thule Op Site, 1951 to 2026. The record is 129 days in 1957, marked on the chart; the median year is 12 days.
Longest dry spell (CDD) at Thule Op Site by year
YearLongest dry spell (CDD)
195120 days
1952107 days
195381 days
195439 days
195561 days
195687 days
1957129 days
195878 days
195942 days
196050 days
196152 days
196251 days
196339 days
196433 days
196525 days
196667 days
196737 days
196853 days
196942 days
197044 days
197183 days
197255 days
197353 days
197438 days
1975104 days
198222 days
198312 days
19849 days
19859 days
19867 days
198715 days
198812 days
19899 days
199011 days
199115 days
199222 days
199312 days
199414 days
199512 days
199611 days
199726 days
199829 days
199920 days
20003 days
20011 day
20029 days
200312 days
200412 days
200516 days
20068 days
20075 days
20086 days
20094 days
20106 days
20114 days
20126 days
20134 days
20146 days
20158 days
20166 days
20174 days
20184 days
20195 days
20203 days
20214 days
20224 days
20236 days
20243 days
20252 days
20267 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

29 years with a frost

Across 29 years with a frost, the median last spring frost at Thule Op Site falls on 26 June and the median first autumn frost on 4 July, which leaves a median of 9 days between them.

Fitted over all years, the growing season changes by +5.5 days per decade at this station.

Frost dates and growing season at Thule Op Site
MeasureMedian, all yearsEarliest periodRecent period (1952 to 2025)Recent against earliestFitted trend
Last spring frost26 Junen/a26 Junen/a-0.7 days per decade
First autumn frost4 Julyn/a4 Julyn/a+4.8 days per decade
Growing days9 daysn/a9 daysn/a+5.5 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Download the Data

  • Data for Thule Op Site standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Thule Op Site threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).